A laparoscopic prostatectomy is carried out using slender tubes inserted through five small holes in the abdomen.腹腔镜前列腺切除术是通过腹部的五个切口插入细管进行的。Mastoidectomy is performed to remove infected air cells within the mastoid bone.乳突切除术是指移除乳突骨内被感染的气房。Patients with advanced achalasia may be better managed with primary oesophageal resection.失弛缓症严重的患者可能直接采用食道切除术效果会比较好。